IBM NeXtScale System Planning And Implementation Manual page 64

Figure 3-11 shows the connectivity of the chassis components through the
midplane.
Servers
Figure 3-11 Midplane connectivity
46
IBM NeXtScale System Planning and Implementation Guide
Midplane
Mux
Power
Supplies
RJ45
I2C
I2C
Mux
ARM
FPC
SOC
12
12
USB
Power
Supplies
Fan
Modules
Fan and Power
Controller
Fan
Modules